Lexic.us

Definition of Cotyledon

1. Noun. Embryonic leaf in seed-bearing plants.

Definition of Cotyledon

1. n. One of the patches of villi found in some forms of placenta.

Definition of Cotyledon

1. Noun. (botany) The leaf of the embryo of a seed-bearing plant; after germination it becomes the first leaves of the seedling. ¹

¹ Source: wiktionary.com

Definition of Cotyledon

1. [n -S]

Medical Definition of Cotyledon

1. Modified leaf (seed leaf), found as part of the embryo in seeds, involved in either storage or absorption of food reserves. Dicotyledonous seeds contain two, monocotyledonous seeds only one. May appear above ground and show photosynthetic activity in the seedling. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Cotyledon

Literary usage of Cotyledon

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Eusporangiatae: The Comparative Morphology of the Ophioglossaceae and by Douglas Houghton Campbell (1911)
"The cotyledon, as in Ophioglossum, is not to be looked upon as an appendage of the stem, but as an organ sui generis. Almost as soon as the second leaf is ..."

2. Pharmaceutical Journal by Pharmaceutical Society of Great Britain (1854)
"Respecting the medicinal use of the cotyledon Umbilicus, ... Ray says, that the root and leaves of cotyledon Umbilicus (or Umbilicus Veneris, ..."

3. Guide to the Materials for American History in Roman and Other Italian Archives by Carl Russell Fish (1911)
"Two regenerated cuttings of cotyledon macrantha were inserted in joints of ... On May 17, 1909, two regenerated slips of cotyledon macrantha were set in ..."

4. Proceedings of the California Academy of Sciences, 4th Series by California academy of sciences (1897)
"THE cotyledon. The cotyledon is formed from one of the two cells into which the terminal segment is first divided. If the primary division is oblique it is ..."

5. The Retrospect of Practical Medicine and Surgery: Being a Half-yearly edited by William Braithwaite, James Braithwaite, Edmond Fauriel Trevelyan (1856)
"The cotyledon was directed to be given in doses of six grains. ... The cotyledon was increased to ten grains. In the week ending April the 26th he had three ..."

6. A Class-book of Botany: Designed for Colleges, Academies, and Other by Alphonso Wood (1869)
"The pine and fir have seeds with from two to three cotyledons, while th« dodder (Cuscuta) is almost the only example known of an embryo with no cotyledon. ..."

7. The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1854)
"cotyledon Umbilicus in Epilepsy.—WH RANKING, MD, of Norwich, in a letter to the Med. Times and Gaz. (April 1, 1854), states that, as far as his - own ..."

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